Answer:2021 recommended the following three types of information collectors, which I personally think are quite good, and I hope they can help you.1. Kedal CDTG-C12, Kedal CDS1013, Xinrui SI-DAS-M2500
Answer:The 2021 information collector is easy to use. I recommend the following three types. I think they are easy to use. I hope they can help you.1. Xinrui SI-DAS-M25002, Kedal CDS1013, Xinrui SI-MA-EWA-PFD-AC-P6-D485